// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "net/base/host_mapping_rules.h"

#include "net/base/host_port_pair.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace net {

namespace {

    TEST(HostMappingRulesTest, SetRulesFromString)
    {
        HostMappingRules rules;
        rules.SetRulesFromString(
            "map *.com baz , map *.net bar:60, EXCLUDE *.foo.com");

        HostPortPair host_port("test", 1234);
        EXPECT_FALSE(rules.RewriteHost(&host_port));
        EXPECT_EQ("test", host_port.host());
        EXPECT_EQ(1234u, host_port.port());

        host_port = HostPortPair("chrome.net", 80);
        EXPECT_TRUE(rules.RewriteHost(&host_port));
        EXPECT_EQ("bar", host_port.host());
        EXPECT_EQ(60u, host_port.port());

        host_port = HostPortPair("crack.com", 80);
        EXPECT_TRUE(rules.RewriteHost(&host_port));
        EXPECT_EQ("baz", host_port.host());
        EXPECT_EQ(80u, host_port.port());

        host_port = HostPortPair("wtf.foo.com", 666);
        EXPECT_FALSE(rules.RewriteHost(&host_port));
        EXPECT_EQ("wtf.foo.com", host_port.host());
        EXPECT_EQ(666u, host_port.port());
    }

    TEST(HostMappingRulesTest, PortSpecificMatching)
    {
        HostMappingRules rules;
        rules.SetRulesFromString(
            "map *.com:80 baz:111 , map *.com:443 blat:333, EXCLUDE *.foo.com");

        // No match
        HostPortPair host_port("test.com", 1234);
        EXPECT_FALSE(rules.RewriteHost(&host_port));
        EXPECT_EQ("test.com", host_port.host());
        EXPECT_EQ(1234u, host_port.port());

        // Match port 80
        host_port = HostPortPair("crack.com", 80);
        EXPECT_TRUE(rules.RewriteHost(&host_port));
        EXPECT_EQ("baz", host_port.host());
        EXPECT_EQ(111u, host_port.port());

        // Match port 443
        host_port = HostPortPair("wtf.com", 443);
        EXPECT_TRUE(rules.RewriteHost(&host_port));
        EXPECT_EQ("blat", host_port.host());
        EXPECT_EQ(333u, host_port.port());

        // Match port 443, but excluded.
        host_port = HostPortPair("wtf.foo.com", 443);
        EXPECT_FALSE(rules.RewriteHost(&host_port));
        EXPECT_EQ("wtf.foo.com", host_port.host());
        EXPECT_EQ(443u, host_port.port());
    }

    // Parsing bad rules should silently discard the rule (and never crash).
    TEST(HostMappingRulesTest, ParseInvalidRules)
    {
        HostMappingRules rules;

        EXPECT_FALSE(rules.AddRuleFromString("xyz"));
        EXPECT_FALSE(rules.AddRuleFromString(std::string()));
        EXPECT_FALSE(rules.AddRuleFromString(" "));
        EXPECT_FALSE(rules.AddRuleFromString("EXCLUDE"));
        EXPECT_FALSE(rules.AddRuleFromString("EXCLUDE foo bar"));
        EXPECT_FALSE(rules.AddRuleFromString("INCLUDE"));
        EXPECT_FALSE(rules.AddRuleFromString("INCLUDE x"));
        EXPECT_FALSE(rules.AddRuleFromString("INCLUDE x :10"));
    }

} // namespace

} // namespace net
